Automatic correcting mechanism for time devices



June 3, 1952 c sc 2,599,289

AUTOMATIC CORRECTING MECHANISM FOR TIME DEVICES Filed Feb. 9, 1950 3 Sheets-Sheet l INVENTOR.

June 3, 1952 c, sc 2,599,289

AUTOMATIC CORRECTING MECHANISM FOR TIME DEVICES F1166 Feb. 9, 1950 3 Sheets-Sheet 2 IN V EN TOR. O'azZes 62%; fl,

June 3, 1952 c. SCHIFFL 2,599,289

AUTOMATIC CORRECTING MECHANISM FOR TIME DEVICES Filed Feb. 9, 1950 '3 Sheets-Sheet I5 INVENTOR. 6242223 ki-z fiw,

Patented June 3, 1952 UNlTED STATES PATENT OFFICE AUTOMATIC CORRECTING MECHANISM FOR TIME DEVICES Charles Schiffl, Montclair, N. J.

Application February 9, 1950, Serial No. 143,218

" (o1. s s5) 12 Claims. 1

This invention relates to automatic correcting mechanism for clocks, time recorders, time stamps and other time devices.

It is an object of this invention to provide automatic setting and synchronizing mechanism for clocks, time recorders, time stamps, and other time devices which require correction, which mechanism canbe actuated by remote control through an electrically or electronically transmitted impulse or signal, whereby to set a minute hand and/or minute type wheel of such devices to correct time when restarting th devices after a stoppage, and to automatically correct a minute hand and/or minute type wheel of running devices, if either slow or fast, at predetermined intervals, as e. g. every hour, every half hour or every quarter hour.

Illustrative embodiments of this invention are shown in the accompanying drawings, in which:

Fig. l is a rear face elevational view of parts of a time device of the time recorder or time stamp type as equipped with one form and arrangement of the automatic correcting mechanism of this invention, said mechanism being shown in its normal initial or inactive position; Fig. 2 is an elevational view of the correcting mechanism per se, showing an operating position thereof when actuated to automatically correct the minute hand and minute type wheel of the running time device, if either slow or fast; Fig. 3 is an elevational view similar to that of Fig. 2, but showing an operating position of the correcting mechanism when actuated to reset the minute hand and minute type wheel of the time device when the latter is started after a stoppage; and Fig. 4 is a fragmentary view similar to that of Fig. 3 but showing a preliminary stage of the resettin operation,

Fig. 5 is a rear face elevational view of parts of a time device of the time recorder or time stamp type as equipped with another and modified formand arrangement of the automatic correcting mechanism of this invention, said mechanism being shown in its normal initial or inactive position; Fig. 6 is an elevational view of the modified correcting mechanism per se with certain parts omitted, showing an operating position of said mechanism as actuated to reset the minute hand and minute type wheel of the time device when the latter is started after a stoppage; Fig. 7 is a view similar to Fig. 6, but showing a preliminary position of the correcting mechanism preparatory to actuation thereof for automatic correction of the minute hand and minute type wheel of the running time device, if either slow or fast;

and Fig. 8 is a similar view showing completion of such correction operation.

Similar characters of reference are employed in the above described views, to indicate corresponding parts.

Referring to the drawings, the reference character l0 indicates the arbor by which is driven the minute type wheel i I of a time device of the time recorder or time stamp type. The minute hand (not shown) which sweeps the clock dial I2 is driven from the arbor II) by a suitable gear train, the latter also operating an hour hand and, through suitable agencies, an hour type wheel of the device, all in manner well known to the art.

Fixed on the arbor i0 is a ratchet wheel i3 by which operative movement is transmitted to said arbor and the parts driven thereby. Since the ratchet wheel drives the minute hand of the clock dial and the minute type wheel II it is provided with sixty teeth. Pivoted on the arbor is a setting lever l4, upon which is pivotally mounted a drive pawl l5 by which the ratchet wheel is actuated. The drive pawl I5 is positively stopped, at the end of a ratchet wheel driving stroke of the setting lever 14, by abutment against a fixed stop piece 15. Also cooperative with the ratchet wheel I3 is a pivoted check pawl I! which holds the ratchet wheel against retrograde movement and back lash. This check pawl I1 is provided with a cam arm l8 which, under conditions hereinafter explained, is subject to actuation whereby to release or withdraw the check pawl from ratchet wheel engagement, and said check pawl is yieldably urged to ratchet wheel engagement by spring means, such e. g. as the pull spring iii.

A power rotated wheel 20 is provided for normal actuation of the setting lever 14. This power wheel may be driven by any suitable power source, but is preferably driven by a sixty cycl A. C. synchronous motor (not shown), whereby it makes one revolution per minute. Projecting from a face of the power wheel 20 is a trip dog 2| which cooperates with thrust means carried by the setting lever l4. Said thrust means, in a form thereof shown in Figs. 1 to 4 inclusive, com,- prises a nose-piece 22 which is pivotally mounted on a stud 23 projecting from a face of the setting lever, and so shaped that a free end portion thereof lies in the path of movement of the trip dog 2|. Said nose-piece 22 is provided with a tail portion 24 having a stop lug 25 projecting from its lower edge. Also pivoted on said stud 23, for cooperation with the nose-piece 22, is a spring carrier 26 which is disposed to overlie the tall portion 24 of the nose-piece in normal stopped engagement with the stop lug 25 of the latter. Said carrier 25 is provided with a trigger arm 2'! dependent from its free end. A spring which is supported by the stud 23 has one of its arm 28 bearing on an abutment pin 29 with which the carrier 26 is provided; the opposite arm 3d of said spring bears against an abutment lug 3| projecting from the upper edge of the nose-piece tail portion 24.

In normal running operation of the time device, each revolution of the power wheel 20 carrles its trip dog 2! into engagement with the nose-piece 22 of the thrust means with which the setting lever id is provided, whereby to swing out the latter against the tension of an anchored pull-spring 32 which is coupled thereto. Such out swing of the setting lever carries back the drive pawl I relative to the ratchet wheel a sufiicient distance to operatively engage a next succeeding tooth of the latter. Thereafter, as the trip dog moves away from and release the thrust means, the pull-spring 32 retracts the setting lever to normal initial position, thus causing the drive pawl to advance the ratchet wheel, and consequently the clock minute hand and minute type wheel, one minute indicating interval.

In the illustrative embodiment of this invention shown in Figs. 1 to 4 inclusive, one form and arrangement of means is provided which is operative for setting the clock minute hand and minute type wheel to correct time indicating positions when the time device is again started after a stoppage, such e. g. as a stoppage due to an electrical power failure. This arrangement comprises an actuating solenoid 38, the armature 34 'ofwhich is projected by a spring means 35 to a normal initial position as determined by a stop pin 35. Connected to the armature 34 is a draw bar 31, the free end portion of which i coupled to the setting lever I4 by a lost motion connec* tion, comprising a coupling pin 38 which pro- Ject's from the setting lever into a longitudinal slot 39 with which the free end portion of the draw'bar is provided. Carried by the draw bar 3"! is a thrust pin 43 which is operative, on retraction of the draw bar, to engage the trigger arm 21 of the setting lever thrust means. When the draw bar is in its projected or inactivepositich (see Fig. 1), the distance between the inner end of the slot 38 and the coupling pin 38 is 'suflic'ient to permit free oscillation of the setting lever under normal power wheel actuation; and the distance between the outer end of the slot 39 and the coupling pin 38 is sufficient to permit a degree of lost motion at the beginning of an operative stroke of the draw bar. When the time device is restarted after a stoppage, it will be slow to the amount of elapsed time between the stoppage and restarting thereof. Correction can be made by transmitting to solenoid 33 an energizing impulse, as by momentarily closing a switch at a master clock by which transmission or the impulse through suitable agencies is controlled. When the solenoid 33 is thus momentarily energized, its armature 34 is retracted and released to thereby reciprocate the draw bar 37. Reciprocation of the draw bar causes oscillation of the setting lever Hi, whereby to advance the ratchet wheel l3 a time unit interval. These operations are successively repeated to the extent required to bring the clock minute hand and the minute type wheel to correct time indicating positions. m 7

In the above described operation, retr-a'ctive LLL movement of the draw bar 31 imparts no operative motion to the setting lever l4 until the outer end of the slot 39 abuts the couplin pin 38, but during such lost motion phase of draw bar movement the thrust pin 46 engages and swings outward the trigger arm 21' of the setting bar thrust means so as to up swing the spring carrier 26 away from the stop lug 25 of the nose piece tail portion 25, thus moving the spring arms 28 and 39 one toward the other so as to put the spring under tension (see Fig. 4). By reason of this, the nose piece 22 is yieldably poised in such manner that it can snap over and away from the trip dog 2! of power wheel 20, as continued movement of the draw bar 3! swings out the setting lever. thereby avoiding obstruction of rotation of said power wheel. After such operation, the thrust means will assume its normal initial position in relation to the setting lever either under gravity or an assisting spring (not shown), when the thrust pin 45 is withdrawn from the trigger arm 21.

In the embodiment of this invention shown in Figs. 1 to 4 inclusive, means is also provided which is operative to synchronize the time device while it is running, whereby to automatically correct the minute hand and minute type wheel, if either slow or fast. The means for this purpose comprises a cam disc 4| which is so related to the ratchet wheel 13 and arbor It as to turn therewith. This cam disc M is provided with one or more radial notches or recesses 42 'indenting its periphery, and so disposed as to be operative once each hour, if one is provided, or every half hour or every quarter hour, if a plurality thereof is provided. Extending from the sides of each notch or recess 42 to the cam disc periphery, in opposite directions, are respective oblique cam sections, comprising a fast correction cam section 43 and a slow correction cam section Ml. Pivotally mounted adjacent to the ratchet wheel I3 and cam disc 4| isa synchronizing lever 25 upon which is carried a roller stud A6 for cooperation with the cam disc 4|. This synchronizing lever 45 is provided with a bell-crank arm 41, the free end 48 of which normally abuts the arbor structure l0, thus determining the normal initial or inactive position of the synchronizing lever 45, as yieldably maintained in such position by an anchored pullspring 49 which is connected with the latter. Said synchronizing lever 45 is actuated by a second solenoid 50, between the armature 51 Of which and the free end portion of the synchronizing lever 45 is connected a draw bar 52. The bellcrank arm 41 is provided with a suitably shaped and located cam slot 53 into which extends a lift stud 54 with which the drive pawl I5 is provided. The synchronizing lever 45 is also provided with a suitably located, laterally projecting trip stud 55 which cooperates with the cam arm ii} of the check pawl IT. I

In the operation of the synchronizing means, a momentarily energizing im ulse is transmitted to the solenoid 5th. The transmission of such energizing impulse at suitable time intervals may be controlled by any suitable means cooperative with a master clock, such e. g. as by an auxiliary timer mechanism of the kind disclosed in my cope'nding Patent Application Ser. 130,375, filed December 1, 1949. When the solenoid 50 is mov As said synchronizing lever is in swung toward the cam disc 4|, its bell-crank arm 41 is up swung, whereby to carry the cam slot 53 into operative engagement with the lift stud 54 of drive pawl l5, thus disengaging the latter from the ratchet wheel I3. At the same time, the trip stud 55 is carried into operative engagement with the cam arm [8 of the check pawl 11, thereby simultaneously also disengaging the latter from the ratchet wheel [3. The pawls l and I! being thus disengaged from the ratchet wheel I3, the latter is free to be moved either forward or backward as may be required to effect correct setting of the minute hand and minute type wheel of the time device in synchronized relation to the master clock, and

thus in correct time indicating positions. If under these circumstances, the time device is running fast, the fast correction cam section 43 of the cam disc 4| will be presented in the path of movement of the roller stud 4% of the in swinging synchronizing lever 45, so that said roller stud will engage and thrust against said fast correction cam section 43, whereby to impart to the freely movable cam disc 4| and ratchet wheel 13 a backward shift which is completed by the entrance of said roller stud into the terminal notch or recess 42 of the cam disc, thereby moving back the ratchet wheel [3 and associated minute hand and minute type wheel of the time device to correct time indicating positions, after which the synchronizing lever returns under pull of spring 49 to normal initial inactive position as the-solenoid 50 is de-energized. On the other hand, if the time device is running slow, the slow correction cam section 44 of the cam disc 4| will be presented in the path of movement of the roller stud 45, and will be engaged thereby to shift forward the cam disc 4| and ratchet wheel i3, whereby to shift forward the minute hand and minute type wheel of the time device to correct time indicating positions. It will be obvious that upon return of the synchronizing lever 45 to normal initial or inactive position, the pawls l5 and I1 will be caused to resume normal engagement with the ratchet wheel l3 so that normal running operation of the time device is thereupon resumed.

It may be here pointed out that the scope of correctional shift of the ratchet wheel I3 may be suitably predetermined by the angle and length of the respective fast correction and slow correction cam sections of the cam disc 4!, and the number of ratchet wheel teeth included between said cam sections. Ordinarily a shift arrangement to correct up to five minutes fast and five minutes slow would be all that should be required.

Referring now to Figs. 5 to 8 inclusive, a modifled and perhaps preferred embodiment of the invention is therein shown, whereby the means operative for both resetting the time device when restarted after a stoppage and for synchronizing the same during running operation thereof are actuated by a single electro-magnetic means or solenoid. In this embodiment, the structures of the power wheel, setting lever, ratchet wheel and cooperative pawls, cam disc and synchronizing lever are substantially the same as above described, and as indicated by corresponding reference characters applied therto. There is provided, however, a somewhat modified form of the thrust means carried by the setting lever M, as will be apparent from the following description of said modified embodiment of this invention. The modified structure comprises a single actuating solenoid having a normally projecting armature 51. Pivotally mounted ad jacent to the solenoid 56 is a bell-crank member 58 to one arm 59 of which the solenoid armature 51 is connected by a link 60. The bell-crank member is yieldablyheld in solenoid armature projecting position by an anchored pull spring 5| which is connected thereto. Connected with the other arm 52 of said bell-crank member is :a draw plate 63. This draw plate 63 is provided at its free end with a dependent arm 64 from the end of which extends a coupler hook portion 65. The draw plate 53 is further provided at its free end with an upwardly extending arm 66 which terminates in a rearwardly projected push finger 61. The synchronizing lever 45 is provided with a coupler stud 68 which projects from a face thereof subject, at proper times, to be engaged by the coupler hook portion 65 of the draw plate 63. In a normal initial position thereof, the lower edge of the draw plate 63 rests and rides upon the arbor structure It, in whichposition the coupler hook portion 65 is disposed below and in disengaged relation to the coupler stud 68, whereby the draw plate, if reciprocated in such position, is without operative effect upon the synchronizing lever 45. The body of the draw plate 63 is provided with a suitably located and shaped opening 69 the upper margin 10 of which provides a lift cam section.

Pivoted on the same axis as that of the fulcrum of the synchronizing lever 45 is a unitary frame comprising a forward plate H and a rearward plate 12 which are joined together in spaced apart unitary relation by transverse outer and inner tie rods 13 and 14. From the inner end of the rearward plate 12 extends a cam arm 15, the free end of which terminates in an oblique nosing It. This cam arm. 15 extends across and adjacent to the face of the cam disc 4|, so that its nosing 16 normally lies in the path of movement of trip stud means '71 which project from said cam disc face. Supported by the frame comprising the plates H and 12, so as to be disposed between said plates, is a shift lever 19. Said shift lever 19 is fulcrumed intermediate its ends on the inner transverse tie rod 14 of the frame whereby to provide an inner arm 88 and an outer arm 8i. Said arm 8| is provided with a dependent adjustable stop element 82 which is opposed to and normally abuts the outer transverse tie rod 13, whereby to dispose the shift lever in normal operative position relative to the frame, in which position it is yieldably retained by a pull spring 83 which is connected between its outer arm 8| and the downwardly offset ear 18 of the forward frame plate H. Projecting laterally from the free end portion of the inner arm of the shift lever 19 is a lift pin 84 which extends into the opening 69 of the draw plate 63. Pivoted on the arbor I0 is a shift lever depresser member 85 provided at its free end with a cam nosing 85 which is normally opposed to the path of movement of the coupler stud 68 which is carried by the synchronizing lever 45. This depresser member 85 is provided with a draft arm 81 angular thereto, and the free end of said draft arm terminates in a lateral pull tongue 88 which overhangs the inner arm 80 of the shift lever 19.

When the device is restarted after a stoppage and correction thereof is to be effected by operationof the modified correcting mechanism, such correction can be made by transmitting to the solenoid 56 an energizing impulse, as by 17 momentarily closing a switch at a master clock by which transmission of the impulse through suitable agencies is controlled. When the (solenoid is thus momentarily energized, its armatime .51 is retracted and released to thereby actuate the bell-crank member 58. The draw plate 63 being in its ,lowerednormal initial position, actuation of the bell-crank member 58 .reciprocates said draw plate, whereby outward movement of the same carries the push 'finger 51 thereof into engagement with ,a roller Stud 89 with which the setting lever 1:4 is provided, thus swinging out the latter to position the drive pawl l5 for advancing the ratchet, wheel 43 a time unit interval as the setting lever returns to normal position under the pull of spring 32 (see Fig. -6). This operation can be successively repeated to the extent required to bring the clock minute hand and the minute type Wheel to correct time indicating positions.

For response :to the above described operation, the power wheel changeable thrust means, with which the setting lever I4 is provided, is somewhat modified to comprise a nose piece 190 pivotally :mounted on the stud v2'3 carried by the setting lever, :and is provided with a tail portion 9! having av stop lug 9.2. Also pivoted on the stud 23 is .av spring carrier :93 having an abutment lug 94. A spring 95, which is supported on the stud, has. one :of its arms disposed to bear on the stop lug .92 of .nosepiece 90,, and its opposite arm to bear on the abutment lug :95, Sold spring carrier -93 has a dependent trigger ,arm 9.6 which :lies ."in the path of a thrust tongue 91 which projects from the top edge of the draw plate =63, When, during the above described setting operation, the draw plate 63 moves outward, the thrust tongue 91 engages and swings back the trigger arm .95 of the spring carrier 93, thus putting the spring 95 under tension. By reason of this, the nose-piece 9B is yielda-bly poised in such manner that it can snap over and, away from the power wheel trip dog 21,, as outward movement of the draw plate is :completed, and, therefore, 'no obstruction to normal rotation of the power wheel .is offered.

In the operation of the above described modified form of the correcting mechanism .to correct the time device it slow or fast, as the scam disc A! rotates it carries -a trip stud .11 into engagement with the nosing 16 of the cam arm :15, Wherebysaidcam arm is up swung, thus upswinging the frame .H'|2 with which it is associated. This elfects a like up swinging movement of the shift lever arm 80. Such upward movement of the shift lever arm 80' carries the lift pin 84 into engagement with the lift cam sectio Hi of the draw plate 63, thus impart- .ing to the latter an'uplifting movement which raises its coupling hook-65 in position to engage the coupler stud .68 of the synchronizing lever 45, Afterthis occurs, the solenoid 5.6 :is momentarily energized by an impulse transmitted thereto-under the control of a, master clock as previously described. When the solenoid 5,6 is thus energized, it :reciprocates the draw plate I631and oscillates the synchronizing lever 45 so as to actuate the cam disc 4-1 :for slow or fast correction as already above described. As the operative outward stroke of the draw plate 63 occurs, the coupler :stud .68 of synchronizing lever 45 is also carried into actuating engagemerit-Withthenosing 86 of the depresser mem- *ber 8li, so' that the latter is moved to cause its draftarm 8 and pull tongue 88 to pull "down the shift lever arm 80, whereby the draw plate 63 may immediately drop down to normal lowered position after completing its synchronizing lever actuating operation, notwithstanding that the cam arm '15 of the frame ll--1: 2 is still engaged and lifted by the trip stud 11, which has not yet passed away therefrom since the effective length of the cam arm must-be, sufiicient "to provide e, g. an amplitude of ten. mimiltes. viz. e-five minutes slow and five, minutes fast. The shift lever 19 yields to such downward movement .by reason of its yieldable relation to the frame 71-12 which is afforded by the intermediate spring connection 83. Such pr mpt d ppin of the draw plate 153 permits normal running operation of the time device under control of the power wheel 2!], but even more important, :permits resetting operations of the time device ii restarting :after a stoppage occurs while the cam arm 15 remains uplifted by a trip stud 1,1, which otherwise could not be accomplished until ,said cam arm 15 wasreleased from said trip stud.

It will be obvious that the hereinabove described correcting mechanism for time devices can be controlled by impulses transmitted from a remote point in various ways to the electromagnetic actuating devices thereof. Qptionally, such impulses or signals may be t ansmitted by a carrier current, differing from normal, over electric light and power lines; by voltage axis shifteither above or beloWanA. Qneutralzaxis, as disclosed e. g.,in U.=S. Patents 2,213,384, 12,26 851, r 2,4 7,6 y r dio or other electronic transmission; ,or in any other manner whereby controlled energization of the electro magnetic actuati g m a s ay e attained- Having now described my invention, -I claim:

1. In a time device having time indicating means, a ratchet wheel for actuating the indicating means, an oscillatabl setting lever provided with 'a drive pawl for driving -t-he ratchet wheel, and power driven :means for oscillating the setting :lever, "in combination with the foregoing elements, electro magneticmeans adapted torbe energized by an impulse transmitted thereto from a remote point, a cam disc rotatable "with the ratchet wheel, and a pivoted synchronizin lever operable by said electroemagnetic means for cooperation with the :cam disc to :rotatiuely shift the same whereby to adjustinglv advance or retract the ratchet wheel, said synchronizing lever having means to disengage the drive pawl from the ratchet wheeland thus free the latter for adjusting movement.

'2. In a time device having time indicating means, a ratchet wheel for actuating the :indicating means, an oscilla'table setting "lever provided with a drive pawl for driving the ratchet wheel, and power driven means for oscillating the setting lever, in combination with the foregoing elements, 'electro-magnetic means adapted -.to be energized by an impulse transmittedthereto from a remote point, means operable by said electro magnetic means for oscillating the-setting levelwith ratchet wheel driving effect independently of said "power driven means, a cam disc rotatable with the ratchet wheel, and a'pivoted synchronizing lever operable by said .electro-magnetic means for cooperation with the cam disc to-rotatively shift the same whereby to adjustingly ad vance or retract the ratchet wheel, said synchronizing lever having means to disengage-the drivepawl from the ratchet wheel and thus free the latter for :ad'justing'movement.

.3. In a time :device having time indicating means, a ratchet wheel for actuating the indicating means, a ratchet wheel for actuating the indicating means, an oscillatable setting lever provided with a drive pawl for driving the ratchet wheel, and a power driven wheel having a trip dog for oscillating the setting lever, in combinaratchet wheel driving effect independently of the power wheel trip dog, a thrust means mounted on the setting lever, said thrust means including a pivoted nose piece engageable by the power wheel trip dog, means operable to tension said nose piece for escape from the trip dog, and said draw member having means for .actuating the tensioning means prior totransmission of oscillating movement by the draw member to the setting lever.

4. In combination with the subject matter of claim 3, a cam disc rotatable with the ratchet wheel, a pivoted synchronizing lever for cooperation with the cam disc to rotatively shift the same whereby to adjustingly advance or retract the ratchet wheel, said synchronizing lever having means to disengage the drive pawl from the ratchet wheel and thus free the latter for adjusting movement, a second electro-magnetic means adapted to be energized by an impulse transmitted thereto from a remote point, and means interconnecting the synchronizing lever and the armature of said second electro-magnetic means.

5. In a time device having time indicating means, a ratchet wheel for actuating the indicating means, an oscillatable setting lever pro vided with a drive pawl for driving the ratchet wheel, and a power driven means for oscillating the setting lever, in combination with the foregoing elements, electro-magnetic means adapted to be energized by an impulse transmitted thereto from a remote point, a cam disc rotatable With the ratchet wheel, said cam disc having at least one recess indenting its periphery from the opposite sides of which extend oblique cam formations, one said formation constituting a fast correction cam and the other formation constituting a slow correction cam, a pivoted synchronizing lever having a roller stud cooperable with the cam disc, said synchronizing lever being adapted to be actuated by the electro-magnetic means whereby to rotatively shift the cam disc for adjustingly advancing or retracting the ratchet wheel, and the synchronizing lever having means to disengage the drive pawl from the ratchet wheel and thus free the latter for adjusting movement.

6. In a time device having time indicating means, a ratchet wheel for actuating the indicating means, an oscillatable setting lever provided with a drive pawl for driving the ratchet wheel, and a power driven means for oscillating the setting lever, in combination with the foregoing elements, electro-magnetic means adapted to be energized by an impulse transmitted thereto from a remote point, means operable by said electro-magnetic means for oscillating said setting lever with ratchet wheel driving effect independently of said power driven means, a cam disc rotatable with the ratchet wheel, said cam disc having at least one recess indenting its pcriphery from opposite sides of which extend oblique cam formations, one said formation constituting a fast correction cam and the other formation a slow correction cam, a pivoted synchronizing lever having a roller stud cooperable with the cam disc, said synchronizingleverbcing adapted to be actuated by the electro-mag netic means whereby to rotatively shift the cam disc for adjustingly advancing or retracting the ratchet wheel, and the synchronizing lever having means to disengage the drive pawl from the ratchet wheel and thus free the latter for adjusting movement.

7. In a time device having time indicating means, a ratchet wheel for actuating the indicating means, an oscillatable setting lever provided with a drive pawl for driving th ratchet wheel, and power driven means for oscillating the setting lever, in combination with the foregoing elements, a cam disc rotatable with the ratchet wheel, a pivoted synchronizing lever cooperative with the cam disc to rotatively shift the same whereby to adjustingly advance or retract the ratchet wheel, said synchronizing lever having means to disengage the drive pawl from the ratchet wheel and thus free the latter for adjusting movement, a single electro-magnetic means adapted to be energized by impulses transmitted thereto from a remote point, a draw member adapted to be actuated by said electromagnetic means, said draw member being shiftable from a first operative position to a second operative position, said draw member having means effective in its first operative position to engage and oscillate the setting lever with ratchet wheel driving effect independently of said power driven means, said draw member and synchronizing lever having cooperative means effective in the second operative position of the former for detachably connecting the same in operative relation, and means actuated by the rotated cam disc and ratchet wheel for shifting said draw member from its first operativ position to its second operative position.

8. A time device as defined in claim 7, wherein the means for shifting the draw. member from its first operative position to its second operative position comprises a pivoted shift lever structure having means to engage the draw member, and trip stud means on the cam disc operative to engage and actuate the shift lever structure for draw member shifting effect.

9. A time device as defined in claim 7, wherein the means for shifting the draw member comprises a pivoted shift lever structure having means to engage the draw member, trip stud means on the cam disc operative to engage and actuate the shift lever structure whereby to shift the draw member from its first operative position to its second operative position, and means actuated by operative movement of the synchronizing lever adapted to release the shift lever structure from shifting engagement with the draw member, whereby the latter will return to its first operative position after operation in its second operative position.

10. A time device as defined in claim 7, wherein the means for shifting the draw member comprises a pivoted frame having a cam arm, trip stud means on the cam disc operative to engage said cam arm, a shift lever pivotally supported by the frame and provided with a shift pin, the draw member having an opening an edge portion of which provides a shift cam section engageable by the shift pin, means to yieldably assaults hold the shittlever for normal movement with the "frame, and means operable by actuated movement 'of the synchronizing lever adapted to releasethe shift lever, independently of frame movement, from shi ftingrelati'onto the draw member, whereby the latter will 'be immediately returned 'to-its'first operative position after operationin its second operative position,

"115'. In a time device having time indicating means, a ratchet wheel for' actuating-the indicating means, an 'oscillatabl e s'etting lever provided with-a drive pawl for driving the ratchet wheel, and power driven means for oscillating the setting'lever, in combinationwith the foregoing elements, a cam disc rotatable with the ratchet wheel, a pivoted synchronizing lever cooperative with the cam disc to rotati'vel'y shift the latter whereby to adjustingly advance or retract the ratchet wheel, said cam disc having at least one recess indenting its periphery from opposite sides o'fwhich extend oblique cam formations, one said formation constituting a fast correction cam "and the other formation constituting a slow correction cam, said synchronizing lever having a roller stud for cooperation with said cam formations of the cam disc, said synchronizing lever having means to disengage the drive pawl from the ratchet Wheel and thus free the latter for adjusting' movement, a single electro-magnetic means adapted to be energized by impulses transmitted thereto from E l-81110138 point, a draw member adapted to be actuated by said electric-magnetic means,

said draw member being shiftable from a first operative position to a second operative position, said draw member having means eiiective in its first operative position to engage and oscillate the setting lever with ratchet wheel driving en ect independently or said power driven means, said draw member and synchronizing lever having cooperative means effective in the second operative position of the former for detachably connecting the same in operative relation, andmeans actuated by the'rotated cam disc and ratchet wheel for shifting the draw member tram its first operative position to its second opera'tive position, said latter means: comprising a pivoted shift lever'structure having means'to engage the draw member, and trip stud means on the cam disc operative to engage and actuate the shift lever structure for draw member shifting effect.

12. In a time device having time indicating means, a ratchet wheel for. actuating the indicating means, an oscillatabl'e setting lever provided with: a drive pawl for driving the ratchet wheel,

and power driven means for oscillating the setting lever, in combination with. the foregoing elements, a camv disc rotatable with the ratchet movement,

wheel, a pivoted'synchronizing lever cooperative with the cam disc to rotatively shift the latter whereby to 'adjustingly advance or retract the ratchet wheel, said cam disc having at least one recess indenting its periphery from opposite'sides of which extendobliquecam formations; one aid formation constituting a fast correction camand the other formation constituting a slow correction cam, said-synchronizing lever havinga roller stud for cooperation with said cam formations of: the cam disc, said synchronizing lever having means to disengage the drive pawl from. the-ratchet wheel and thus free the :latter for adjusting a single electromagnetic means adapted to he energized by impulses transmitted thereto from a remote point, a draw member adapted to be actuated by said electric-magnetic means, said drawmember being s'hiiztable from a first operative position to a second operative position, said draw member having means effective in its first operative position. toengage and oscillate the setting lever with ratchet wheel driving effect independently of said power driven means, said draw member and synchronizing lever havingv cooperative means effective in the second operative position of the former for detachably connecting the same inoperative relation, and means actuated by the rotated cam disc and ratchet wheel for shifting the draw member from its first operative position to its second operative position, said latter means comprising a pivotedirame having a cam arm, trip stud means on the cam disc operative to engage said cam arm, a shift leverpivotally"supported by the frame and provided with a shift pin, the draw member having opening arr-edge portion of which provides a shift cam section engageable by the shift pin, means to yieldab'ly hold the. shift lever for normal movement with the frame, and means operable by actuated movement of the synchronizing lever adapted to release the shift lever, indepen'dently of frame movement, from shifting relation tothedraw member, whereby the latter will be immediately returned to its first operative position after operation in its second operative position.

CHARLES sCI-lIi- FL.v

CES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 542,424 Church May 19, 1891 2,073,449 Jackson Mar. 9, 1937 2,447,798 Deane Aug. 24, 1948 

